The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 1979
Filed:
Aug. 08, 1977
John P Candlin, Aston, near Stevenage, GB;
John A Segal, London, GB;
Imperial Chemical Industries Limited, London, GB;
Abstract
A transition metal compound containing at least one .eta..sup.6 -arene is contacted with a solid material of the formula MX.sub.2 nL where X is a halogen atom, n is such that 0<n.ltoreq.6 and L is an organic Lewis Base compound. The transition metal compound can be a compound such as TiCl.sub.2.2AlCl.sub.3 -arene. The solid material is preferably of high surface area and this may be inherent in the solid material or can be achieved by a grinding procedure. The solid material may be MgCl.sub.2 2.0 C.sub.2 H.sub.5 OH; MgCl.sub.2 2.0 CH.sub.3 COOH or MgCl.sub.2 1.0 CH.sub.3 COOC.sub.2 H.sub.5. The solid material can be treated with a halogen-containing compound either before, during or after the contacting with the transition metal compound. The product of the contacting is useful either as catalyst for the polymerization of unsaturated hydrocarbon monomers or as a component of such a catalyst. When used as a component of an olefine polymerization catalyst, the transition metal product can be mixed with an organo-aluminium compound and and additional Lewis Base compound such as an ester. The catalyst can be used to polymerize or copolymerize olefine monomers to obtain a high yield of a polymer.